cosmological principles

The Cosmological Principles are fundamental assumptions about the universe. They state that, on a large scale, the universe is homogeneous (the same everywhere) and isotropic (looks the same in every direction). This means that no matter where you observe it from, the universe behaves uniformly. These principles help scientists in cosmology, the study of the universe's origin and structure, by simplifying models and theories. They imply that our observations from Earth are representative of the universe as a whole, facilitating our understanding of cosmic phenomena and the laws governing the universe.